KR102192373B1 - Image reading apparatus and image reading method - Google Patents

Abstract

An image reading apparatus and an image reading method are provided. The apparatus and method can effectively perform the confirmation process for determining whether or not the manuscript has been forgotten after image reading only when appropriate. Whether or not a process for detecting forgotten manuscripts needs to be performed is determined each time after a read process for reading an image of one page, and before the process.

Description

An image reading device and an image reading method TECHNICAL FIELD [IMAGE READING APPARATUS AND IMAGE READING METHOD}

The present invention relates to an image reading apparatus for reading a document.

In an image reading apparatus capable of reading an original set on the original glass, the original after the reading process is sometimes left by the user. Thus, for example, Japanese Patent Laid-Open No. 2015-026979 discloses an image reading apparatus that performs processing to check whether or not a manuscript remains on the reading table after the reading processing is completed.

However, performing such confirmation processing disclosed in Japanese Patent Laid-Open No. 2015-026979 every time after the reading processing of reading the manuscript takes more processing time than necessary, and there may be a concern that unnecessary warnings are provided to the user. For example, if two-sided copying is performed on one sheet by setting the originals one page at a time on the reading table, the user changes the original on the reading table from the original for the first side to the original for the second side. And need to be set. In this case, when the reading process of the manuscript for the first side is finished, the user has not yet obtained the desired final result. Therefore, it is unlikely that the user will forget to remove the original for the first side from the reading table. Even in such a case, if the confirmation process is automatically performed, the user becomes cumbersome due to more processing time and unnecessary warnings.

This embodiment relates to an additional usability improvement for processing to ensure that the manuscript is not forgotten after the image is read. According to an embodiment, the image reading apparatus comprises: a reading unit configured to read an image of an original set on the original glass, a manuscript forgetting detection unit configured to execute detection processing for detecting oblivion of the original on the original glass, and a plurality of pages And a control unit configured to perform control such that when the reading function of the manuscript including the manuscript is set, detection processing is not executed for at least pages other than the last page of the manuscript, and the detection processing is executed for the last page of the manuscript.

Further features and embodiments will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings.

1A to 1C are schematic diagrams showing the configuration of a multifunction peripheral (MFP).
Fig. 2 is a diagram showing an example of a layout of operation keys provided in an operation unit.
Fig. 3 is a block diagram showing a control configuration of an MFP.
Fig. 4 is a block diagram showing a software control configuration of an MFP.
Fig. 5 is a block diagram showing the hardware configuration of the scanner unit.
6 is a flowchart showing a shading process.
7 is a flowchart showing details of a dimming process.
Fig. 8 is a flowchart showing details of shading data processing.
9 is a flowchart showing a document reading process.
Fig. 10 is a flowchart showing manuscript presence/absence determination processing.
11A to 11C are diagrams showing specific examples of determination in a manuscript presence determination process.
Fig. 12 is a flowchart showing a manuscript forgetting detection necessity determination process.
13 is a diagram including a flow chart of FIGS. 13A and 13B. 13 is a flowchart showing a manuscript forgetting detection process.
14 is a top view showing a cover opening/closing detection position.
15 is an example of a display for warning that a manuscript is forgotten.

1A to 1C are schematic diagrams showing the configuration of a multifunction device (hereinafter "MFP") 100 usable as an image reading apparatus. 1A is an external perspective view of the MFP 100. 1B is a side cross-sectional view of the MFP 100. 1C is a top view of the MFP 100 with the document cover removed. When the reading process of reading the original is performed, the user opens the original glass cover 102 which can be opened and closed around the hinge 116, as shown in Fig. 1A. Thereafter, the user sets the document S on the document glass 101. In this process, the user places the document S on the document glass 101 so that the reading surface of the document S faces the contact glass 115. Thereafter, the user closes the document glass cover 102. The document glass cover 102 also functions as a platen for pressing the document S set on the contact glass 115. A white sheet 105 is attached to the surface of the document cover 102 that comes into contact with the contact glass 115 so that the read image of the portion where the document S does not exist is less distinct from the read image of the document area. . On the front surface of the MFP 100, an operation unit 500 for a user to input commands is provided.

2 is a diagram showing a layout of operation keys in the operation unit 500. When the user designates the "copy" key 501, a read operation of reading the original S set on the original glass 101 is performed, and image data corresponding to the original S is acquired. The acquired image data is recorded on a blank sheet inserted through the insertion port 103, and the sheet on which the image data is recorded is discharged through the discharge port 104. When the user specifies the "scan and transfer" key 502, the image data acquired by the read operation is transferred to the designated external device via the network. When the user designates the "scan and store" key 503, the image data acquired by the read operation is directly stored in the memory in the device. 2 shows an example in which three kinds of operation keys are provided, but keys other than these keys may also be provided. In addition, the above-described commands for the MFP 100 may also be input from the host computer 300 externally connected to the MFP 100.

In the MFP 100, a scanner mechanism for reading a manuscript and a printer mechanism for recording an image are provided. However, Fig. 1B only shows an overview of the scanner mechanism. The contact glass 115 fitted to the document glass 101 smooths the surface of the document (S), and also maintains a certain distance between the scanner sensor (hereinafter, "CIS") 120 and the document (S). Plays a role.

The CIS 120 includes a light emitting element array 111, a rod lens array 112, and an image sensor array 113, and can be moved in the y direction of FIG. 1B by a motor (not shown). That is, the y direction corresponds to the sub-scan direction. In the light-emitting element array 111, a plurality of light-emitting elements are arranged in the x direction at a density corresponding to a reading resolution (300 dpi). In the rod lens array 112, a plurality of rod lenses are arranged in the x direction with a density corresponding to the reading resolution (300 dpi). In the image sensor array 113, a plurality of image sensors are arranged in the x direction with a density corresponding to a reading resolution (300 dpi). That is, the x direction corresponds to the main scanning direction. The light emitting element array 111 includes light emitting elements of red (R), green (G), and blue (B), and emits light toward the original S at a period synchronized with the moving speed of the CIS 120 . Each rod lens emits light from the light emitting element to condense the light reflected from the original S, and induces the condensed light to a corresponding one of the image sensors. Each image sensor photoelectrically converts the collected light and transmits an output current to a control unit in the device.

As shown in FIG. 1C, the width of the CIS 120 in the x direction and the moving distance in the y direction of the CIS 120 are sufficiently larger than the size of the contact glass 115, and the originals placed on the contact glass 115 ( The entire surface of S) can be reliably read by the CIS 120. A white reference sheet 114 used to perform shading processing of the CIS 120 is provided at a position upstream of the y-direction among the movable ranges of the CIS 120. In the actual reading process, the scan area 117 narrower than the entire area of the contact glass 115 is set in accordance with the original size. The moving distance of the CIS 120 and the number of pixels to be read by the CIS 120 are minimized accordingly.

3 is a block diagram showing a control configuration of the MFP 100. The control unit 202 includes a printer unit 213 for performing a write operation, a scanner unit 214 for performing a read operation, an operation unit 500, and a user interface unit such as a display screen (hereinafter "UI unit") ( 215).

The central processing unit (CPU) 203 controls the apparatus in the apparatus according to the control program and various setting information stored in the read-only memory (ROM) 205. The random access memory (RAM) 204 is a main memory memory of the CPU 203 and is used as a work area, or as an area for temporarily holding the contents of the ROM 205 stored therein. As the ROM 205 of this exemplary embodiment, flash storage may be used. However, an auxiliary storage device such as a hard disk may also be provided.

The printer interface (I/F) 207 controls the printer unit 213 according to the instruction of the CPU 203. Image data processed by the image processing unit 216 and stored in the RAM 204 is transferred to the printer unit 213 via the printer I/F 207. The printer unit 213 records an image along the image data.

The scanner I/F 208 controls the scanner unit 214 according to an instruction from the CPU 203. Image data read by the scanner unit 214 is transmitted to the control unit 202 via the scanner I/F 208.

The operation unit I/F 209 controls the UI unit 215 according to the instruction from the CPU 203. For example, the operation unit I/F 209 transmits the command input to the user to the CPU 203 via the operation unit 500 of the UI unit 215, and the printer unit 213 or the scanner unit ( The state of 214 is displayed on the display unit of the UI unit 215. The universal serial bus (USB) I/F 210 and network I/F 211 control communication between the host computer 300 and the control unit 202 externally connected to the MFP 100.

The image processing unit 216 converts the image data acquired by the scanner unit 214 into image data that can be recorded by the printer unit 213 or into image data that can be transferred to the host computer 300. In particular, the image processing unit 216 is a hardware for performing high-load processing at high speed when image processing is performed on image data acquired on the RAM 204 according to, for example, a control program stored in the ROM 205. It is used as a function.

FIG. 3 shows a form in which one CPU 203 controls the entire device using one memory (RAM 204). Alternatively, for example, multiple CPUs allow multiple memories such as RAM, ROM, and storage to cooperate to control the entire device. Also alternatively, a more dedicated hardware component may be provided, such as the image processing unit 216 or the like.

4 is a block diagram showing the software control configuration of the MFP 100. The control program of the MFP 100 can be largely divided into an application 410, a middleware 420, and an operating system 430. The operating system 430 provides basic functions for executing the control program in the control unit 202. The application 410 operates the device via individual modules included in the middleware 420 to realize functions such as a copy function provided by the MFP 100 to a user. The processing realized by each software is a method in which the CPU 203 loads various programs corresponding to each software stored in a memory such as the ROM 205 into the RAM 204 and executes various programs. Made possible by

The middleware 420 includes a software module that controls an interface with a device. In the present exemplary embodiment, a printer control module 421 that controls the printer I/F 207, and a scanner control module 422 that controls the scanner I/F 208 are provided. In addition, an I/F control module 424 and a UI control module 425 are also provided. The I/F control module 424 controls the USB I/F 210 and the network I/F 211 used for communication with the host computer 300. The UI control module 425 controls the operation unit I/F 209 used for communication with the UI unit 215.

For example, when a user inputs a "copy" command through the operation unit 500 shown in FIG. 2, the UI control module 425 detects the "copy" command and sends the "copy" command to the application 410 Notify. In the application 410, based on the "copy" job, the function management application (hereinafter, "function management APL") 411 creates a scan job and a print job, and the job application (hereinafter, "job management APL") ( 412) is notified of scan jobs and print jobs. The job management APL 412 uses the scanner control module 422 of the middleware 420 to perform a scan operation on the scanner unit 214 and stores the acquired image data in the RAM 204. In this process, when some image processing or correction is required, the image processing unit 216 is used.

When image data is stored in the RAM 204, then, the job management APL 412 uses the printer control module 421 to cause the printer unit 213 to execute a write operation. Specifically, the job management APL 412 transfers the image data stored in the RAM 204 to the printer unit 213 via the printer I/F 207. Thereafter, the printer unit 213 receives the image data and writes the image on the sheet according to the image data. Further, in this processing, when some image processing or correction is required, the image processing unit 216 is used.

5 is a block diagram showing the hardware configuration of the scanner unit 214. The scanner unit 214 includes a sensor control unit 301 that controls the image sensor array 113 of the CIS 120, a light emitting element control unit 302 that controls the light emitting element array 111 of the CIS 120, and It includes a motor control unit 303 that controls the motor to move the CIS (120).

The scanner I/F 208 includes an analog-to-digital (A/D) conversion circuit 311 and a scanner unit control circuit 314. The scanner unit control circuit 314 is a circuit that controls the entire scanner unit 214. For example, while moving the CIS 120 at a predetermined speed via the motor control unit 303, the scanner unit control circuit 314 is provided with the light emitting element array 111 via the light emitting element control unit 302. R, G, and B of each of the light emitting elements are sequentially emit light. In addition, the scanner unit control circuit 314 transmits the detected analog signal to the image sensor of the image sensor array 113 via the sensor control unit 301 in synchronization with the light emission timing. The A/D conversion circuit 311 converts the analog signal acquired from the sensor control unit 301 into a digital signal, and transfers the digital signal to the image processing unit 216 or to a designated area in the RAM 204. The scanner I/F 208 also includes an addition circuit 312 and a selection circuit 313 used in the shade correction processing described later.

With reference to the flowchart, descriptions of various processes related to a read operation in accordance with one or more embodiments are provided. In the present exemplary embodiment, the CPU 203 reads and executes the scanner control module 422 (software) shown in FIG. 4 to cause the processing of the flowchart to be executed by using the hardware configuration shown in FIG. In this exemplary embodiment, the image reading apparatus may include a plurality of CPUs, and at least one of the plurality of CPUs may execute processing of the flowchart. Alternatively, each of the plurality of CPUs can execute different processing. For example, among a plurality of CPUs, the first CPU may perform the first processing, and the second CPU may perform the second processing.

6 is a flowchart illustrating a process of obtaining correction coefficients for shading processing. This process is a process of obtaining correction coefficients for each of the image sensors to reduce the detection fluctuations of a plurality of image sensors included in the CIS 120, and the MFP 100 is turned on or a read operation is performed. It is performed at the appropriate timing as just before.

When this process is started, in step S611, the scanner control module 422 moves the CIS 120 directly below the white reference sheet 114 via the motor control unit 303. In step S612, the scanner control module 422 executes a dimming process. The dimming process is a process for adjusting the light emission time to an appropriate light emission time for the image sensor array 113 for each color.

7 is a flowchart showing details of the dimming process. When this process is started, in step S621, the scanner control module 422 sets one color of R, G, and B that has not yet been subjected to the dimming process. Thereafter, the process proceeds to step S622. In step S622, the scanner control module 422 sets the lighting time T of the set color to a predetermined maximum time Tmax (T=Tmax).

In step S623, the scanner control module 422 lights the light emitting element of the currently set color for the lighting time (T). The light emitted by this lighting is reflected from the white reference sheet 114 and received by a plurality of image sensors arranged in the image sensor array 113.

When the lighting time T elapses, the scanner control module 422 turns off the light emitting element, and the process proceeds to step S624. In step S624, using the A/D conversion circuit 311, the scanner control module 422 converts the analog signal output from the image sensor into a digital signal according to the above-described received light, and converts the 16-bit output value (O). Acquires.

In step S625, the scanner control module 422 selects a maximum value Omax from among a plurality of output values O each corresponding to a different one of the plurality of image sensors acquired in step S624, and a preset upper limit value Compare (Osat) with the maximum value (Omax). The upper limit value Osat represents the saturation value of the image sensor. When the output value O exceeds the upper limit value Osat, this means that the amount of light emission of the light-emitting element is too large, and thus the image sensor cannot distinguish the contrast of the image. In this exemplary embodiment, the maximum value (Omax) is compared with the upper limit value (Osat), and the currently set lighting time (T) is compared so that the reading operation can be performed with a large amount of light emission as possible under the condition that all image sensors are not saturated. It is determined whether it is appropriate. When the maximum value Omax exceeds the upper limit value Osat (YES in step S625), the process proceeds to step S626. In step S626, in order to reduce the amount of light emission, the scanner control module 422 decreases the lighting time T by Ts from the current value. Thereafter, the process returns to step S623.

On the other hand, in step S625, when it is determined that the maximum value Omax does not exceed the upper limit value Osat (NO in step S625), the process proceeds to step S627. In step S627, the scanner control module 422 sets the light emission time T0 of the set color as the current lighting time T (T0=T). Steps S626 and S627 are repeated while the lighting time T gradually decreases accordingly. As a result, the maximum light emission time is set as the final light emission time T0 under the condition that all image sensors are not saturated.

In step S628, the scanner control module 422 determines whether or not the light emission time T0 has been set for all colors. When the color for which the light emission time T0 is to be set still remains (NO in step S628), the process returns to step S621. In step S621, the scanner control module 422 sets the next color for which the light emission time T0 has not yet been set. Thereafter, the scanner control module 422 performs a light emission time setting process (steps S622 to S627) for the set color. On the other hand, when it is determined that the light emission time T0 has been set for all colors (YES in step S628), this process ends. Thereafter, the process returns to the flowchart of FIG. 6.

The light emission time T0 of each color determined by the dimming process described with reference to Fig. 7 is commonly used in various processes performed subsequently. Specifically, the light emission time T0 is used in the shading data generation process performed in step S613 of FIG. 6. Additionally, the light emission time T0 is also used when a read operation for reading an actual image is performed, and is also used when the open/close state of the cover is confirmed.

FIG. 8 is a flowchart showing the shading data generation process executed in step S613 in FIG. 6. When this process is started, in step S631, according to the light emission time T0 set for each color, the scanner control module 422 turns on the light emitting elements of each color in turn. The light emitted by this lighting is reflected from the white reference sheet 114 and received by a plurality of image sensors. In step S632, the scanner control module 422 causes the A/D conversion circuit 311 to convert the output signal from the image sensor into a digital signal to obtain a plurality of output values Osh_on. Thereafter, the scanner control module 422 stores a plurality of output values Osh_on in the RAM 204 in a manner in which each of the plurality of output values Osh_on is associated with a corresponding one of the image sensors.

In this process, the scanner control module 422 can employ various methods as a method of obtaining the output value Osh_on. For example, the scanner control module 422 performs the light emission process of step S631 and the light reception process of step S632 a plurality of times, and the average value of the detected output values of the plurality of times is converted to an output value (Osh) corresponding to the image sensor. Can be set. In this case, the scanner control module 422 may perform a light emission step and a light reception step a plurality of times while moving the CIS 120 in the y direction. When the scanner control module 422 excludes the maximum value and the minimum value of the output values detected a plurality of times and calculates the average value thereafter, the influence of dust or singularity attached to the white reference sheet 114 may be alleviated.

In step S633, the scanner control module 422 selects a maximum value (Osh_max) and a minimum value (Osh_min) for each of R, G, and B among the plurality of output values (Osh_on) acquired in step (S632), The maximum value (Osh_max) and the minimum value (Osh_min) are stored in the shadow data storage area 331. In this process, the output values Osh corresponding to all the image sensors arranged in the x direction are not necessarily set as targets for selection of the maximum value Osh_max and the minimum value Osh_min. For example, as shown in FIG. 1C, when the CIS 120 is larger than the width in the x direction of the contact glass 115 or the white reference sheet 114, the contact glass 115 or the white reference sheet 114 Only the output value Osh included in the area corresponding to is set as a selection object. The maximum value (Osh_max) and minimum value (Osh_min) stored in this step are subsequently used to execute the reading process of the actual image.

In addition, acquisition of the output value (Osh_on) in step S632 and selection of the maximum value (Osh_max) and minimum value (Osh_min) in step S633 are performed by the scanner I/F 208, as shown in FIG. It can be performed using the provided addition circuit 312 and selection circuit 313.

In step S634, the scanner control module 422 turns off all light emitting elements. Thereafter, in step S635, the scanner control module 422 acquires the output value Osh_off of each image sensor in a state in which the light emitting element is kept in the unlit state. Then, the scanner control module 422 stores the output value Osh_off in the RAM 204 in such a way that each of the output values Osh_off is associated with a corresponding one of the plurality of image sensors. As a specific method of obtaining the output value Osh_off, various methods similar to the acquisition of the output value Osh_on can be employed.

In step S636, based on the output value Osh_on stored in step S632 and the output value Osh_off stored in step S635, the scanner control module 422 generates a corresponding one shadow data of the image sensor. . As a method of calculating shadow data, a known technique can be employed. Thereafter, the scanner control module 422 stores the shadow data in the shadow data storage area 331 of the RAM 204 in such a way that the shadow data is associated with a corresponding one of the image sensor. After the storage of the shadow data is completed, the scanner control module 422 deletes the temporarily stored output value Osh_on and the output value Osh_off. This process ends accordingly, and the process returns to the flowchart in FIG. 6.

Referring back to FIG. 6, after the shading data generation process is completed in step S613, the process proceeds to step S614. In step S614, the scanner control module 422 moves the CIS 120 to the standby position. The shading process in Fig. 6 is thus completed. An example of the standby position is shown in FIG. 14.

It is preferable that the shading processing described with reference to Fig. 6 should be performed for each read resolution, and the shading data should be stored for each read resolution. For example, 2592 data related to a resolution of 300 dpi, 5184 data related to a resolution of 600 dpi, and 1296 data related to a resolution of 150 dpi may be stored in different areas.

9 is a flowchart showing a document reading process performed by the scanner unit 214. This process is initiated when the user inputs a command including a read operation via the operation unit 500 or the host computer 300.

When this process is started, in step S7000, the scanner control module 422 sets the mode of the read operation. Specifically, the scanner control module 422 acquires information such as read resolution, document size, number of pages of the document, and color mode or black and white mode from the job management APL 412. This information can be entered by the user. Alternatively, the information may be automatically acquired by pre-scanning with the CIS 120 in a state where the manuscript S is set on the contact glass 115. Acquiring information prior to the actual reading operation makes it possible for the scanner control module 422 to preset various conditions required when a reading operation is performed. For example, after setting the reading resolution, the number and position of image sensors for which the output value is valid, and the moving speed of the CIS 120 may be set. In addition, after setting the size of the document, the effective range of the image sensors arranged in the CIS 120 and the moving range of the CIS 120 can be determined. Further, after setting the color mode or the monochrome mode, it is possible to determine the color of the light-emitting element whose output is effective. For example, when the color mode is set, use of all output values of R, G, and B can be preset. When the monochrome mode is set, the use of the output value of only green (G) can be set in advance.

In step S7001, the scanner control module 422 moves the CIS 120 to the read start position, and initializes the parameters Line_cnt and Doc_on_flg. The parameter Line_cnt represents the number of lines in which the existence of an original is confirmed among a plurality of lines (pixel columns) arranged in the y direction. Further, the parameter Doc_on_flg is set to "on" indicating that the original S is placed on the original glass 101, or "off" indicating that the original S is not placed on the original glass 101. In step S7001, these parameters are set to Line_cnt=0 and Doc_on_flg=off.

In step S7002, the scanner control module 422 moves the CIS 120 to the line to be read. In step S7003, the scanner control module 422 acquires an output signal for one line. Specifically, the scanner control module 422 turns on the light emitting element based on the light emission time T0 and acquires a digital output value from the image sensor. In addition, the scanner control module 422 corrects the digital output value using the shadow data stored in the shadow data storage area 331, and then stores the corrected digital output value in the scanned image data storage area 332 as final read data. do. In this process, the correction operation can be performed using the shade correction processing unit 321 provided to the image processing unit 216. On the other hand, the digital output value before being corrected is also used in the manuscript presence/absence determination processing that can be performed in the next step. Therefore, the scanner control module 422 stores the digital output value before correction.

In step S7004, the scanner control module 422 executes the document presence/absence determination process, and determines whether the document exists in the current read line. The manuscript presence/absence determination processing will be described in detail later.

If the determination result indicates "the original exists in the current read line" based on the processing in step S7004 (YES in step S7005), the process proceeds to step S7006. In step S7006, the scanner control module 422 increments Line_cnt, and the process proceeds to step S7007. Further, in step S7007, the scanner control module 422 determines whether the current value of Line_cnt exceeds a predetermined threshold value (Line_cnt_on).

In this exemplary embodiment, the threshold value (Line_cnt_on) corresponds to the number of consecutive lines "the original is present" thereon in accordance with the determination based on the processing in step S7004, which is "the original is present on the original glass". That is enough to conclude. The threshold value Line_cnt_on may be set to the number of lines corresponding to a range of, for example, about 2 mm. In accordance with the judgment based on the processing in step S7004, even when "the document exists" is on one or several consecutive lines, considering the adhesion of dust, "the document is actually placed on the document glass" Is not enough to conclude. In this exemplary embodiment, a step is provided for comparing the number of consecutive lines on which "the manuscript is present" with a threshold value (Line_cnt_on) according to the determination. Therefore, it can be clearly determined whether or not "the original is placed on the original glass".

If it is determined in step S7007 that Line_cnt>Line_cnt_on (Yes in step S7007), the process proceeds to step S7008. In step S7008, the scanner control module 422 sets Doc_on_flg=on, and the process then proceeds to step S7010. If it is determined in step S7007 that Line_cnt≦Line_cnt_on (No in step S7007), the process proceeds immediately to step S7010. On the other hand, if it is determined in step S7005 that "the original does not exist on the current line" (NO in step S7005), the process proceeds to step S7009. In step S7009, the scanner control module 422 resets Line_cnt, and the process proceeds to step S7010.

In step S7010, the scanner control module 422 checks whether reading of all lines (corresponding to the number of pixels in the y direction) set in step S7000 has been completed. If it is determined that there are still lines to be read out (NO in step S7010), the process returns to step S7002. In step S7002, the scanner control module 422 moves the CIS 120 to the next line. When the read processing for all lines has been completed, that is, when it is determined that the read processing for one page has been completed (YES in step S7010), the process proceeds to step S7011.

In step S7011, the scanner control module 422 performs a manuscript forgetting detection necessity determination process. The determination process will be described later in detail with reference to FIG. 12. In step S7012, the scanner control module 422 determines whether it is determined in step S7011 that it is necessary to detect forgotten manuscripts. If it is determined that the manuscript forgotten detection is necessary (YES in step S7012), the process proceeds to step S7013. In step S7013, the scanner control module 422 determines whether Doc_on_flg=on, that is, whether or not the original is placed on the original glass 101. When Doc_on_flg=on (YES in step S7013), the process proceeds to step S7014. In step S7014, the scanner control module 422 executes the document forgotten detection process, and then ends this process. The manuscript forgetting detection process will be described later in detail with reference to FIG. 13. On the other hand, when it is determined that Doc_on_flg = off in step S7013 (No in step S7013), or when it is determined in step S7012 that manuscript forgetting detection is not necessary (No in step S7012), processing Proceeds to step S7015. Then, in step S7015, the scanner control module 422 moves the CIS 120 to the standby position without executing the opening/closing detection process of the original glass cover 102, and ends this process. This is the document reading process according to the present exemplary embodiment.

The image data stored in the scanned image data storage area 332 by repetition of steps S7002 to S7010 is subsequently used in various ways. For example, when the "copy" key 501 is designated, the image data is used for the recording operation performed by the printer unit 213. Further, when the "scan and transfer" key 502 is specified, the image data is used as data for transfer processing using the network I/F 211.

10 is a flowchart showing the document presence/absence determination processing executed in step S7004 in FIG. 9. When this process is started, the scanner control module 422 determines in step S7100 whether Doc_on_flg=on. When Doc_on_flg=on (YES in step S7100), it is determined that the document is placed on the document glass 101. Therefore, this process is immediately ended. On the other hand, if Doc_on_flg=off (No in step S7100), the process proceeds to step S7101.

In step S7101, the scanner control module 422 sets one of R, G, and B as the processing target color. Further, in step S7102, the scanner control module 422 selects a maximum value (Ord_max) and a minimum value (Ord_min) for the target color set from among digital output values for one line acquired in step S7003. The range for selecting these values corresponds to the range in which the maximum value Osh_max and the minimum value Osh_min are selected in step S633 of FIG. 8. As a method of selecting these values, data temporarily stored in the RAM 204 can be retrieved, or a selection circuit 313 provided in the scanner I/F 208 is used.

In step S7103, the scanner control module 422 stores the maximum value Ord_max acquired in step S7102 and the maximum value Osh_max stored in the shadow data storage area 331 in the shading process described with reference to FIG. It reads and determines whether there is a large change between these values. Specifically, using a preset threshold value Tmax, the scanner control module 422 determines whether the condition (1) is satisfied.

abs(1- (Ord_max/Osh_max))>Tmax (condition(1))

When condition (1) is satisfied (YES in step S7103), the process proceeds to step S7105. In step S7105, the scanner control module 422 determines that "the original is in the target line (the output value is on the read line obtained in step S7003)". Then, this process ends. On the other hand, when it is determined that the condition 1 is not satisfied (No in step S7103), the process proceeds to step S7104.

In step S7104, the scanner control module 422 reads the minimum value Ord_min acquired in step S7102 and the minimum value Osh_min stored in the shadow data storage area 331, and whether there is a large change between these values. Determine whether or not. Specifically, using the preset threshold value Tmin, the scanner control module 422 determines whether the condition 2 is satisfied.

abs(1- (Ord_min/Osh_min))>Tmin (condition(2))

When condition (2) is satisfied (YES in step S7104), the process proceeds to step S7105. In step S7105, the scanner control module 422 determines that "the original exists in the target line". Then, this process ends. On the other hand, when it is determined that the condition 2 is not satisfied (No in step S7104), the process proceeds to step S7106.

In step S7106, the scanner control module 422 determines whether or not the determination processing for all colors has been completed, that is, whether there is a color for which the determination in step S7103 or S7104 has not yet been made. If there is a color for which the determination has not yet been made in step S7103 or S7104 (No in step S7106), the process returns to step S7101. In step S7101, the scanner control module 422 changes the target color to a new color, and the process proceeds to step S7102 again. On the other hand, when it is determined in step S7106 that the judgment processing has been completed for all colors (YES in step S7106), the process proceeds to step S7107. In step S7107, the scanner control module 422 determines that "the original does not exist in the target line". Then, this process ends.

According to the above manuscript presence/absence determination processing, for all colors R, G, and B, only when both the maximum value (Ord_max) and the minimum value (Ord_min) of the output value do not change significantly from the output value obtained when the shading processing is performed, " No manuscript" is judged. In all other cases, "there is a manuscript" is determined.

11A to 11C are diagrams showing specific examples of determination in the document presence/absence determination processing. The horizontal axis represents the position of each image sensor in the x direction on the line to be determined, and the vertical axis represents the output value of each image sensor. Fig. 11A shows a case where the original is not placed on the line to be judged. Fig. 11B shows a case where a manuscript in which characters are recorded on a blank paper is placed on a line to be determined. Fig. 11C shows a case where a light green plain document is placed on a line to be judged on the original glass 101. As shown in FIG. In all of Figs. 11A to 11C, the output value on the line to be determined when the red (R) light emitting element is used is compared with the detection value (shaded data) when the white reference sheet 114 is detected.

When a document is not placed on the line to be judged on the document glass 101, all image sensors detect the white sheet 105 attached to the back surface of the document glass cover 102. Accordingly, as shown in Fig. 11A, the output value is similar to the shading data. In this case, both the maximum value Ord_max and the minimum value Ord_min of the output value do not change significantly from the maximum value Osh_max and the minimum value Osh_min of the shadow data. Also, the same situation applies when the luminous color is green (G) or blue (B). As a result, in step S7107, it is determined that "the original does not exist in the target line".

When an original is placed on the line to be determined on the platen table 101, the output value of the image sensor at the position corresponding to the black character is low, and the output value of the image sensor at the position corresponding to the blank area is high. In the shape of these output values, irregularities appear as in Fig. 11B. Accordingly, the minimum value Ord_min is significantly reduced than the minimum value Osh_min of the shadow data. As a result, in step S7105, it is determined that "the original exists in the target line".

When a light green plain document is placed on the line to be judged on the platen glass 101, all image sensors commonly detect light green. Accordingly, as shown in Fig. 11C, the output result of the image sensor has a substantially the same shape as that of the shadow data and has a low value overall. Accordingly, both the maximum value (Ord_max) and the minimum value (Ord_min) of the output value are smaller than the maximum value (Osh_max) and the minimum value (Osh_min) of the shadow data. As a result, in step S7105, it is determined that "the original exists in the target line".

However, when the color of the plain document is not light green but pink, and when the luminous color is red, the output result is as shown in FIG. 11A. Further, in view of this situation, in this exemplary embodiment, detection is performed for all colors of R, G, and B. And, in at least one of these colors, if any one of the maximum value (Ord_max) and the minimum value (Ord_min) of the output value changes significantly from the output value obtained when the shading process is performed, it can be determined that "the manuscript exists". . As described above, in the manuscript presence/absence determination processing according to the present exemplary embodiment, it is possible to determine the presence or absence of a manuscript regardless of the background color of the manuscript or the color of the image.

The threshold values Tmax and Tmin need only be properly adjusted according to the whiteness of the white sheet 105, and are not particularly limited. When the whiteness of the white sheet 105 is sufficiently close to the whiteness of the white reference sheet 114, the threshold values Tmax and Tmin may be set to about 0.2, for example.

FIG. 12 is a flowchart showing the manuscript forgetting detection necessity determination processing executed in step S7011 in FIG. 9. When this process is started, the scanner control module 422 checks in step S1201 whether the current read process is "actual read process for acquiring desired image data". For example, in the case of a read process for pre-scanning a manuscript, or a read process for reading a test pattern for automatically adjusting the recording position of the printer unit 213, "actual read process for acquiring desired image data It is determined that it is not (No in step S1201). And, in this case, the process skips to step S1206. In step S1206, the scanner control module 422 sets "no original oblivion detection is necessary." Then, this process ends. On the other hand, if the current reading processing is a manuscript reading operation other than a pre-scan operation, that is, "actual reading processing for acquiring desired image data" (YES in step S1201), the processing proceeds to step S1203 do.

In step S1203, the scanner control module 422 checks the mode set in step S7000, and determines whether the currently executed read operation is a read operation for reading an original including a plurality of pages. For example, when the user selects "Copy" in Fig. 2, when selecting N-in-one (N-in-1) copying (N is an integer greater than 1) or duplex copying, multiple pages are selected. Corresponds to a read operation for reading a containing document. Of course, when the functions of both N-in-one copying and double-sided copying are set, it also corresponds to a read operation for reading an original including a plurality of pages. When these functions are selected and the user places the first original on the original glass 101 and provides an instruction to start reading, a scan process of scanning the first original is executed. Then, after the scanning process of scanning the first manuscript is completed, a "reading start" button and a "printing start" button are displayed on the operation unit 500. "First original" corresponds to one side of the original placed on the original glass 101. In this process, when the user places the second original on the original glass 101 and provides an instruction to start reading, the scan process of scanning the second original is executed. Then, after the scanning process for scanning the second manuscript is completed, a "reading start" button and a "printing start" button are displayed on the operation unit 500 again. In this process, when N-in-one copying (N is an integer greater than 1) is selected, and when the "Print start" button is pressed, N-in-one copying (N is an integer greater than 1) processed printouts Is output. When double-sided printing is selected, and when the "start printing" button is pressed, the printed matter subjected to double-sided printing is output. Display control of the "read start" button and "print start" button are executed each time reading of one original is completed. When it is determined that the manuscript including a plurality of pages does not exist (No in step S1203), there is a possibility that the manuscript is forgotten on the current page. Therefore, the process proceeds to step S1207. In step S1207, the scanner control module 422 sets "Original oblivion detection is required". Then, this process ends. For example, the case where at least one of duplex printing and N-in-one copying (N is an integer greater than 1) is not selected corresponds to a case where the determination is NO in step S1203. On the other hand, when it is confirmed that a manuscript including a plurality of pages exists (YES in step S1203), the process proceeds to step S1204.

In step S1204, the scanner control module 422 determines whether the read operation of reading the current page has been normally completed. When it is determined that the read operation for reading the current page is not normally completed (NO in step S1204), there is a possibility that the manuscript is forgotten in the current page. Therefore, the process proceeds to step S1207. In step S1207, the scanner control module 422 sets "Original oblivion detection is required". Then, this process ends. In this process, the case where the read operation for reading the current page is not normally completed corresponds to a case where an operation error occurs or a case where a cancel command is interrupted. For example, when two-in-one copying is selected and a fifth original out of ten originals to be read is placed on the original glass 101, and the "read start" button is selected, the fifth original is scanned. If an error occurs in this scan, even if the user does not press the "print start" button, the fifth original is treated as the final original. Therefore, it is necessary to perform oblivion detection on the fifth manuscript as the final manuscript. Therefore, if the determination is NO in step S1204 (NO in step S1204), the process proceeds to step S1207. On the other hand, when it is determined that "the read operation for reading the current page is normally completed" (YES in step S1204), the process proceeds to step S1205.

In step S1205, the scanner control module 422 determines whether the current page is the last page. If the current page is the final page (YES in step S1205), there is a possibility that the manuscript may be forgotten on the current page. Therefore, the process proceeds to step S1207. In step S1207, the scanner control module 422 sets "Original oblivion detection is required". Then, this process ends. On the other hand, when the current page is not the last page (No in step S1205), it is clear that the user will perform the operation of setting the manuscript of the next page. Therefore, the process proceeds to step S1206. In step S1206, the scanner control module 422 sets "no original oblivion detection is necessary." Then, this process ends.

The determination of whether the current page is the last page is based, for example, on whether or not the "print start" button has been pressed. For example, when 2-in-one copying is selected, the fifth original is placed on the original glass 101, and the "read start" button is selected, the fifth original is scanned. Then, after the scanning process for scanning the fifth original is completed, a "read start" button and a "print start" button are displayed on the operation unit 500. In this process, when the user selects the "print start" button, the fifth original is handled as the final original. Therefore, when the "print start" button is pressed, the determination is YES in step S1205, and the process proceeds to step S1207. Alternatively, as another determination method of step S1205, each time the scan is complete, a "reading end" button is displayed, and a determination is made in step S1205 based on whether the "reading end" button is selected. I can.

That is, in Fig. 12, each time a read process for reading a manuscript for one page is executed, a screen (a screen including a "read start" button) allowing selection of whether or not execution of the read process continues is displayed. do. Then, when it is selected that execution of the reading process is not continued (when the "read start" button is not pressed and the "print start" button is pressed), the document forgotten detection is executed.

In this exemplary embodiment, by the above-described processing, it is determined that detection processing is unnecessary for pages other than the last page of the manuscript, and that detection processing is necessary for only the last page of the manuscript. Alternatively, as another processing, the image reading apparatus may execute a determination that detection processing is unnecessary for at least one page other than the last page of the manuscript, and determination that detection processing is required for the last page of the manuscript. have. In this case, if it is determined in step S1205 that "manuscript forgotten detection is unnecessary" for at least one page, the scanner control module 422 determines that "manuscript forgotten detection is necessary" for the subsequent pages.

FIG. 13 is a flowchart showing the manuscript forgetting detection process executed in step S7014 in FIG. 9. When the user removes the document from the document glass 101, the document glass cover 102 is opened and closed. In view of this situation, this process is for detecting the opening and closing of the document glass cover 102, determining the forgotten of the document, and warning the user.

When this process is started, the CPU 203 places the CIS 120 at the cover opening/closing detection position in step S7201. 14 is a top view showing the cover opening/closing detection position 1101. In the present exemplary embodiment, the cover opening/closing detection position 1101 is a position sufficiently spaced from the white reference sheet 114 in the y direction so that the document does not exist at this position even when the document is placed on the document glass 101. . In this position, irrespective of whether the original is set on the original glass 101, the object to be detected by the CIS 120 is the white sheet 105. However, referring to FIG. 1C, the manuscript S has a thickness. Therefore, when the original is set on the original glass 101, a certain amount of space is generated between the contact glass 115 and the white sheet 105. And, due to the influence of this space, the output value of the CIS 120 is smaller when the original is set on the original glass 101 than when the original is not set on the original glass 101. In this exemplary embodiment, using this characteristic, the scanner control module 422 periodically detects the output result from the CIS 120. And, when a change in the output result is observed between detection operations, the scanner control module 422 determines that the document glass cover 102 has been opened and closed between these detection operations. The movement of the CIS 120 in step S7201 may be performed as an extension of the movement (of step S7002) for a read operation that is repeatedly executed in FIG. 9.

In step S7202, the scanner control module 422 determines whether or not a predetermined time has elapsed since this process (platen cover opening/closing detection process) was started. The predetermined time is sufficient time to determine that the manuscript is forgotten after the reading operation for reading the manuscript has ended. The predetermined time may be set to, for example, about 1 minute. When it is determined in step S7202 that a predetermined time has elapsed (YES in step S7202), the user may forget the manuscript. Therefore, the process proceeds to step S7218. In step S7218, the scanner control module 422 warns the user that the manuscript is forgotten through the UI unit 215 or the host computer 300. The method of warning the user is not particularly limited, for example, the display shown in FIG. 15 may be performed through the liquid crystal display unit of the main body of the MFP 100 or the monitor of the host computer 300, or the warning sound Can occur.

After the warning is provided, the process proceeds to step S7219. In step S7219, the scanner control module 422 returns the CIS 120 to the standby position and ends this process. On the other hand, in step S7202, when it is determined that the predetermined time has not yet elapsed (No in step S7202), the process proceeds to step S7203 so that the scanner control module 422 detects opening and closing of the cover. .

In step S7203, based on the light emission time T0 set in the dimming process, the scanner control module 422 lights the light emitting elements in color order. In step S7204, the scanner control module 422 obtains an output value for one line. Additionally, in step S7205, the scanner control module 422 selects a maximum value (Ocv_max_on) and a minimum value (Ocv_min_on) from among a plurality of output values.

In step S7206, the scanner control module 422 determines whether the current maximum value (Ocv_max_on) and minimum value (Ocv_min_on) are the output values obtained in the first reading process when the light emitting element is turned on after the start of this process. do. When the current maximum value (Ocv_max_on) and minimum value (Ocv_min_on) are the output values obtained in the first read process (YES in step S7206), the process skips to step S7209. If the current maximum value (Ocv_max_on) and minimum value (Ocv_min_on) are not the output values obtained in the first read process (No in step S7206), the process proceeds to step S7207.

In step S7207, the scanner control module 422 determines whether the current maximum value Ocv_max_on changes from the maximum value Ocv_max_on_old obtained in the previous detection process. Specifically, using the preset threshold Ocv_MAX_TH, the scanner control module 422 determines whether the condition (3) is satisfied.

abs((Ocv_max_on-Ocv_max_on_old)> Ocv_MAX_TH (condition(3))

When the condition 3 is satisfied (YES in step S7207), it may be determined that the document glass cover 102 is opened or closed. Therefore, the process proceeds to step S7219. In step S7219, the scanner control module 422 returns the CIS 120 to the standby position, and ends this process. If condition (3) is not satisfied (No in step S7207), the process proceeds to step S7208.

In step S7208, the scanner control module 422 determines whether the current minimum value Ocv_min_on changes from the minimum value Ocv_min_on_old obtained in the previous detection process. Specifically, using the preset threshold Ocv_MIN_TH, the scanner control module 422 determines whether the condition (4) is satisfied.

abs((Ocv_min_on-Ocv_min_on_old)> Ocv_MIN_TH (condition(4))

When the condition 4 is satisfied (YES in step S7208), it can be determined that the document glass cover 102 is opened or closed. Therefore, the process proceeds to step S7219. In step S7219, the scanner control module 422 returns the CIS 120 to the standby position, and ends this process. If the condition 4 is not satisfied (No in step S7208), the process proceeds to step S7209.

In step S7209, the scanner control module 422 replaces the current maximum value (Ocv_max_on) with the previous maximum value (Ocv_max_on_old), and replaces the current minimum value (Ocv_min_on) with the previous minimum value (Ocv_min_on_old).

In step S7210, the scanner control module 422 turns off the light emitting element. In step S7211, the scanner control module 422 obtains an output value for one line. Additionally, in step S7212, the scanner control module 422 selects a maximum value (Ocv_max_off) and a minimum value (Ocv_min_off) from among a plurality of output values.

In step S7213, the scanner control module 422 determines whether the current maximum value (Ocv_max_off) and minimum value (Ocv_min_off) are output values obtained in the first reading process when the light emitting element is turned off after the start of this process. do. When the current maximum value (Ocv_max_off) and minimum value (Ocv_min_off) are the output values obtained in the first reading process (YES in step S7213), the scanner control module skips to step S7216. When it is determined that the current maximum value (Ocv_max_off) and minimum value (Ocv_min_off) are not the output values obtained in the first reading process (No in step S7213), the process proceeds to step S7214. In step S7214, the scanner control module 422 determines whether or not the current maximum value Ocv_max_off changes from the previous maximum value Ocv_max_off_old. Specifically, using the threshold value Ocv_MAX_TH, the scanner control module 422 determines whether the condition 5 is satisfied.

abs((Ocv_max_off-Ocv_max_off_old))> Ocv_MAX_TH (condition(5))

When the condition 5 is satisfied (YES in step S7214), it can be determined that the document glass cover 102 is opened or closed. Therefore, the process proceeds to step S7219. In step S7219, the scanner control module 422 returns the CIS 120 to the standby position, and ends this process. If the condition 5 is not satisfied (NO in step S7214), the process proceeds to step S7215.

In step S7215, the scanner control module 422 determines whether the current minimum value Ocv_min_off changes from the previous minimum value Ocv_min_off_old. Specifically, using the threshold value Ocv_MIN_TH, the scanner control module 422 determines that the condition 6 is satisfied.

abs((Ocv_min_off-Ocv_min_off_old))> Ocv_MIN_TH (condition(6))

When the condition 6 is satisfied (YES in step S7215), it can be considered that the document glass cover 102 is opened and closed. Therefore, the process proceeds to step S7219. In step S7219, the scanner control module 422 returns the CIS 120 to the standby position, and ends this process. If the condition 6 is not satisfied (NO in step S7215), the process proceeds to step S7216.

In step S7216, the scanner control module 422 replaces the current maximum value (Ocv_max_off) with the previous maximum value (Ocv_max_off_old), and replaces the current minimum value (Ocv_min_off) with the previous minimum value (Ocv_min_off_old), and the process It proceeds to step S7217. In step S7217, the scanner control module 422 waits 500 msec without executing any processing, and the processing returns to step S7202.

According to the document glass cover opening/closing detection process, when a document is removed within a predetermined time (within 1 minute), a difference appears to some extent between two output values acquired at an interval of 500 msec. And, in this case, as a result of any of the steps S7207, S7208, S7214, and S7215, this process is terminated without a step (step S7218) for warning the user that the manuscript has been forgotten. On the other hand, if the original is not removed within the predetermined time, the process proceeds to step S7218. In step S7218, a warning sound or warning indication is used to warn the user that the manuscript has been forgotten to be removed.

If a new read command is input while the platen cover open/close detection process is being performed, the process can immediately proceed to step S7219, and the process can be terminated. And, a new read operation can be initiated. In view of this situation, the cover opening/closing detection position may also be provided on the side of the reference position in advance with respect to the original S. However, in this case, the difference between the two output values is not a difference occurring due to the presence or absence of a space, but a difference between the output value obtained when the original is detected and the output value obtained when the white sheet 105 is detected. The cover opening/closing detection position is provided near the reference position. As a result, the time for returning the CIS 120 to the reference position can be shortened, and the read operation can be started immediately after the command is input.

The determination of whether or not the original cover is opened or closed can generally be determined only by processing based on an output value obtained when the light emitting element is turned on in steps S7203 to S7209. However, in an environment in which external light such as a white lamp is present, with the cover open and even when the document is removed, the image sensor emits light from the light emitting element of the CIS 120 and equals the amount of light reflected from the document. There is a case of receiving light. Even in this case, processing based on the output value obtained when the light emitting element is turned off as in steps S7210 to S7216 can accurately determine the state in which the document cover is open. Therefore, in the present exemplary embodiment, the opening and closing of the cover is performed based on the output value obtained when the light emitting element is turned on in steps S7203 to S7209 and when the light emitting element is turned off as in steps S7210 to S7216. It is determined based on all of the processing based on the obtained output value.

As shown in Fig. 13, the manuscript forgetting detection process in which a read operation and a plurality of judgment processes are periodically repeated is an effective method for making sure judgment. However, when a user handles a manuscript containing multiple pages and performs an operation without forgetting to remove the manuscript, the user is asked by the time spent in the judgment processing and whether the user has not forgotten the manuscript. It is cumbersome by unnecessary indications of warnings.

Therefore, in the present exemplary embodiment, referring again to Fig. 9, the manuscript forgetting detection necessity determination processing (step S7011) is performed before the manuscript forgetting detection processing (step S7014). And only when it is determined that the manuscript forgotten detection is necessary, the manuscript forgotten detection process is performed. In addition, even when it is found that the manuscript has not been placed as a result of the manuscript reading process (Doc_on_flg=off), the manuscript forgotten detection processing (step S7014) is not performed based on the judgment processing in step S7013. Does not.

That is, according to the present exemplary embodiment, when the possibility of forgetting that the manuscript is removed is low, it is possible to avoid performing the manuscript forgotten detection process (step S7014). Accordingly, the present exemplary embodiment can efficiently detect manuscript forgetting while reducing the hassle felt by the user.

In the above description, the configuration is that the MFP is used as an example of the image reading apparatus. However, the embodiment is not limited to this form. Any form can be employed as the image reading apparatus according to the present invention as long as the original is set and the scanner function can read the original. Accordingly, the image reading apparatus can efficiently perform the document forgotten confirmation process after the image is read.

The above embodiment also supplies a program for achieving one or more functions of the exemplary embodiment to a system or device through a network or a storage medium, and causes one or more processors of the computer of the system or device to read and execute the program. It can be achieved by processing. Additionally, embodiments may also be realized by circuits (eg, Application Specific Integrated Circuits (ASICs)) to achieve one or more functions.

Other examples

The embodiment(s) of the present invention are computer executable recorded on a storage medium (which may be broadly referred to as a'non-transitory computer-readable storage medium') to perform one or more functions of the above-described embodiment(s). A system comprising one or more circuits (e.g., ASICs) that read and execute instructions (e.g., one or more programs) and/or perform one or more functions of the embodiment(s) described above. Or by reading and executing computer-executable instructions from a storage medium to perform one or more functions of the embodiment(s) described above, and/or by the computer of the device, and/or the embodiment(s) described above. It may also be implemented by a method performed by a computer of a system or apparatus, by controlling one or more circuits to perform one or more functions of. A computer may include one or more processors (e.g., a central processing unit (CPU), a micro processing unit (MPU)), and separate computers or separate computer processors for reading and executing computer-executable instructions. May include a network. Computer-executable instructions may be provided to a computer from, for example, a network or a storage medium. The storage medium is, for example, a hard disk, a random access memory (RAM), a read-only memory (ROM), a storage unit of a distributed computing system, an optical disk (for example, a compact disk (CD), a digital multifunctional disk (DVD)). ), or Blu-ray disk (BD™)), a flash memory device, a memory card, and the like.

(Other Examples)

In the present invention, a program that realizes one or more functions of the above embodiment is supplied to a system or device via a network or a storage medium, and one or more processors in the computer of the system or device read and execute the program. It is also possible to realize the processing.

It can also be implemented by a circuit (eg, ASIC) that realizes one or more functions.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be construed in the broadest sense so as to cover all such modifications and equivalent structures and functions.

Claims (20)

It is an image reading device,
A reader configured to read an image of an original set on the original glass,
A read control unit configured to perform read processing by moving the reader from a standby position,
A manuscript forgotten detection unit configured to execute a detection process for detecting whether the manuscript on the manuscript is forgotten,
A first determination unit configured to determine whether at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set as an original reading function,
A second determination unit, configured to determine whether or not the read target page of the original is a final page when it is determined that at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set,
A control unit, configured to perform a control such that the detection process is not executed on at least a page other than the last page of the manuscript, but is executed on the last page of the manuscript, based on a result determined by the second judgment unit. , A control unit, and
A display control unit configured to perform display processing relating to forgetting of the manuscript, before the reader returns to the standby position, when the forgotten of the manuscript is detected as a result of the detection processing performed on the last page of the manuscript
Containing, an image reading device. The method of claim 1,
And a warning unit configured to warn a user when the manuscript forgotten detection unit detects forgotten of the manuscript. The method of claim 1,
The second determination unit determines whether or not a processing target page is a final page by determining whether a button for ending the reading process has been pressed. The method of claim 1,
The image reading apparatus, wherein when the reading processing is canceled or when an error occurs, the control unit determines that detection by the document forgotten detection unit is necessary even when the page to be read is not the last page of the document. The method of claim 1,
The image reading apparatus, wherein when a reading processing different from an actual reading processing for acquiring desired image data is performed by the reader, the control unit determines that detection by the manuscript forgetting detection unit is unnecessary. The method of claim 1,
When at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set, each time after the read process for reading an image for one page is executed, execution of the read process must be continued. A screen allowing you to select whether or not is displayed is displayed,
The image reading apparatus, wherein when a selection that the execution of the reading processing should be continued is not made on the screen, the control unit controls the document forgotten detection unit to execute the detection processing. The method of claim 1,
The image reading apparatus, wherein the manuscript forgotten detection unit detects the forgotten of the manuscript by detecting whether a cover covering the manuscript set on the manuscript table is opened or closed. The method of claim 1,
The reader acquires an output value of a reading sensor moving with respect to the document and performs read processing for reading the document,
The image reading apparatus, wherein the manuscript forgotten detection unit periodically acquires an output value of the read sensor disposed at a predetermined position to detect the forgotten of the manuscript. The method of claim 1,
When it is determined that neither N-in-one copying (N is an integer greater than 1) nor double-sided copying is set, the control unit does not perform the determination process by the second determination unit and the read target page is An image reading device that determines to perform the detection process. The method of claim 1,
When it is not determined that at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set, the control unit does not perform the judgment processing by the second judgment unit and the detection in the manuscript An image reading device that determines to perform processing. Is an image reading method,
Performing a reading process of reading an image of an original set on the original glass by moving the reader from the standby position,
Executing a detection process for detecting that the document on the document glass is forgotten,
A first determination step of determining whether at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set as the original reading function,
A second determination step of determining whether or not the read target page of the original is a final page when it is determined that at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set,
Based on the result determined by the second determination step, performing a control of not executing the detection process for at least pages other than the last page of the manuscript, and executing the detection process for the last page of the manuscript Step, and
When the forgotten of the manuscript is detected as a result of the detection processing performed on the last page of the manuscript, before the reader returns to the standby position, performing display processing regarding the forgotten of the manuscript
Including, an image reading method. The method of claim 11,
The image reading method further comprising the step of warning a user when the oblivion of the manuscript is detected. The method of claim 11,
The second determining step determines whether or not the processing target page is a final page by determining whether a button for ending the reading process has been pressed. The method of claim 11,
An image reading method, wherein it is determined that the detection processing is necessary even when the reading processing is canceled or an error occurs, and the page to be read is not the last page of the manuscript. The method of claim 11,
When a read process different from the actual read process for acquiring the desired image data is performed in the step of performing the read process, the step of performing the control for executing the detection process determines that the detection process is unnecessary. Way. The method of claim 11,
When at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set, each time after a read process for reading an image for one page is executed, the execution of the read process should be continued. Further comprising the step of displaying a screen to enable selection of whether or not,
The image reading method, wherein when a selection that execution of the reading processing should be continued is not made on the screen, the step of performing control to execute the detection processing controls the detection processing to be executed. The method of claim 11,
In the detection process, the oblivion of the document is detected by detecting whether a cover for covering the document set on the document glass is opened or closed. The method of claim 11,
The step of performing the read process is to perform the read process by acquiring an output value of a read sensor moving with respect to the document,
In the detection process, an output value of the read sensor disposed at a predetermined position is periodically acquired to detect oblivion of the manuscript. The method of claim 11,
In the first determination step, when it is determined that neither N-in-one copying (N is an integer greater than 1) nor double-sided copying is set, the reading object is not performed without performing the determination by the second determination step. Determining to perform the detection processing in a page. The method of claim 11,
In the first judgment step, when it is not determined that at least one of N-in-one copying (N is an integer greater than 1) and double-sided copying is set, the manuscript does not perform the judgment by the second judgment step. Determining to perform the detection process.

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